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don't crash in dtor if the dialog had never been shown (patch 1723848)
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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: docview.cpp
3 // Purpose: Document/view demo
4 // Author: Julian Smart
5 // Modified by:
6 // Created: 04/01/98
7 // RCS-ID: $Id$
8 // Copyright: (c) Julian Smart
9 // Licence: wxWindows license
10 /////////////////////////////////////////////////////////////////////////////
11
12 /*
13 * Purpose: Document/view architecture demo for wxWidgets class library - MDI
14 */
15
16
17 // For compilers that support precompilation, includes "wx/wx.h".
18 #include "wx/wxprec.h"
19
20 #ifdef __BORLANDC__
21 #pragma hdrstop
22 #endif
23
24 #ifndef WX_PRECOMP
25 #include "wx/wx.h"
26 #endif
27
28 #if !wxUSE_DOC_VIEW_ARCHITECTURE
29 #error You must set wxUSE_DOC_VIEW_ARCHITECTURE to 1 in setup.h!
30 #endif
31
32 #if !wxUSE_MDI_ARCHITECTURE
33 #error You must set wxUSE_MDI_ARCHITECTURE to 1 in setup.h!
34 #endif
35
36 #include "docview.h"
37 #include "doc.h"
38 #include "view.h"
39
40 MyFrame *frame = (MyFrame *) NULL;
41
42 IMPLEMENT_APP(MyApp)
43
44 MyApp::MyApp(void)
45 {
46 m_docManager = (wxDocManager *) NULL;
47 }
48
49 bool MyApp::OnInit(void)
50 {
51 //// Create a document manager
52 m_docManager = new wxDocManager;
53
54 //// Create a template relating drawing documents to their views
55 (void) new wxDocTemplate((wxDocManager *) m_docManager, _T("Drawing"), _T("*.drw"), _T(""), _T("drw"), _T("Drawing Doc"), _T("Drawing View"),
56 CLASSINFO(DrawingDocument), CLASSINFO(DrawingView));
57
58 //// Create a template relating text documents to their views
59 (void) new wxDocTemplate(m_docManager, _T("Text"), _T("*.txt"), _T(""), _T("txt"), _T("Text Doc"), _T("Text View"),
60 CLASSINFO(TextEditDocument), CLASSINFO(TextEditView));
61
62 //// Create the main frame window
63 frame = new MyFrame((wxDocManager *) m_docManager, (wxFrame *) NULL,
64 _T("DocView Demo"), wxPoint(0, 0), wxSize(500, 400),
65 wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE);
66
67 //// Give it an icon (this is ignored in MDI mode: uses resources)
68 #ifdef __WXMSW__
69 frame->SetIcon(wxIcon(_T("doc")));
70 #endif
71 #ifdef __X__
72 frame->SetIcon(wxIcon(_T("doc.xbm")));
73 #endif
74
75 //// Make a menubar
76 wxMenu *file_menu = new wxMenu;
77 wxMenu *edit_menu = (wxMenu *) NULL;
78
79 file_menu->Append(wxID_NEW, _T("&New...\tCtrl-N"));
80 file_menu->Append(wxID_OPEN, _T("&Open...\tCtrl-X"));
81
82 file_menu->AppendSeparator();
83 file_menu->Append(wxID_EXIT, _T("E&xit\tAlt-X"));
84
85 // A nice touch: a history of files visited. Use this menu.
86 m_docManager->FileHistoryUseMenu(file_menu);
87
88 wxMenu *help_menu = new wxMenu;
89 help_menu->Append(DOCVIEW_ABOUT, _T("&About\tF1"));
90
91 wxMenuBar *menu_bar = new wxMenuBar;
92
93 menu_bar->Append(file_menu, _T("&File"));
94 if (edit_menu)
95 menu_bar->Append(edit_menu, _T("&Edit"));
96 menu_bar->Append(help_menu, _T("&Help"));
97
98 #ifdef __WXMAC__
99 wxMenuBar::MacSetCommonMenuBar(menu_bar);
100 #endif //def __WXMAC__
101 //// Associate the menu bar with the frame
102 frame->SetMenuBar(menu_bar);
103
104 frame->Centre(wxBOTH);
105 #ifndef __WXMAC__
106 frame->Show(true);
107 #endif //ndef __WXMAC__
108
109 SetTopWindow(frame);
110 return true;
111 }
112
113 int MyApp::OnExit(void)
114 {
115 delete m_docManager;
116 return 0;
117 }
118
119 /*
120 * Centralised code for creating a document frame.
121 * Called from view.cpp, when a view is created.
122 */
123
124 wxMDIChildFrame *MyApp::CreateChildFrame(wxDocument *doc, wxView *view, bool isCanvas)
125 {
126 //// Make a child frame
127 wxDocMDIChildFrame *subframe =
128 new wxDocMDIChildFrame(doc, view, GetMainFrame(), wxID_ANY, _T("Child Frame"),
129 wxPoint(10, 10), wxSize(300, 300),
130 wxDEFAULT_FRAME_STYLE |
131 wxNO_FULL_REPAINT_ON_RESIZE);
132
133 #ifdef __WXMSW__
134 subframe->SetIcon(wxString(isCanvas ? _T("chart") : _T("notepad")));
135 #endif
136 #ifdef __X__
137 subframe->SetIcon(wxIcon(_T("doc.xbm")));
138 #endif
139
140 //// Make a menubar
141 wxMenu *file_menu = new wxMenu;
142
143 file_menu->Append(wxID_NEW, _T("&New..."));
144 file_menu->Append(wxID_OPEN, _T("&Open..."));
145 file_menu->Append(wxID_CLOSE, _T("&Close"));
146 file_menu->Append(wxID_SAVE, _T("&Save"));
147 file_menu->Append(wxID_SAVEAS, _T("Save &As..."));
148
149 if (isCanvas)
150 {
151 file_menu->AppendSeparator();
152 file_menu->Append(wxID_PRINT, _T("&Print..."));
153 file_menu->Append(wxID_PRINT_SETUP, _T("Print &Setup..."));
154 file_menu->Append(wxID_PREVIEW, _T("Print Pre&view"));
155 }
156
157 file_menu->AppendSeparator();
158 file_menu->Append(wxID_EXIT, _T("E&xit"));
159
160 wxMenu *edit_menu = (wxMenu *) NULL;
161
162 if (isCanvas)
163 {
164 edit_menu = new wxMenu;
165 edit_menu->Append(wxID_UNDO, _T("&Undo"));
166 edit_menu->Append(wxID_REDO, _T("&Redo"));
167 edit_menu->AppendSeparator();
168 edit_menu->Append(DOCVIEW_CUT, _T("&Cut last segment"));
169
170 doc->GetCommandProcessor()->SetEditMenu(edit_menu);
171 }
172
173 wxMenu *help_menu = new wxMenu;
174 help_menu->Append(DOCVIEW_ABOUT, _T("&About"));
175
176 wxMenuBar *menu_bar = new wxMenuBar;
177
178 menu_bar->Append(file_menu, _T("&File"));
179 if (isCanvas)
180 menu_bar->Append(edit_menu, _T("&Edit"));
181 menu_bar->Append(help_menu, _T("&Help"));
182
183 //// Associate the menu bar with the frame
184 subframe->SetMenuBar(menu_bar);
185
186 return subframe;
187 }
188
189 /*
190 * This is the top-level window of the application.
191 */
192
193 IMPLEMENT_CLASS(MyFrame, wxDocMDIParentFrame)
194 BEGIN_EVENT_TABLE(MyFrame, wxDocMDIParentFrame)
195 EVT_MENU(DOCVIEW_ABOUT, MyFrame::OnAbout)
196 END_EVENT_TABLE()
197
198 MyFrame::MyFrame(wxDocManager *manager, wxFrame *frame, const wxString& title,
199 const wxPoint& pos, const wxSize& size, long type):
200 wxDocMDIParentFrame(manager, frame, wxID_ANY, title, pos, size, type, _T("myFrame"))
201 {
202 editMenu = (wxMenu *) NULL;
203 }
204
205 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
206 {
207 (void)wxMessageBox(_T("DocView Demo\nAuthor: Julian Smart\nUsage: docview.exe"), _T("About DocView"));
208 }
209
210 // Creates a canvas. Called from view.cpp when a new drawing
211 // view is created.
212 MyCanvas *MyFrame::CreateCanvas(wxView *view, wxMDIChildFrame *parent)
213 {
214 int width, height;
215 parent->GetClientSize(&width, &height);
216
217 // Non-retained canvas
218 MyCanvas *canvas = new MyCanvas(view, parent, wxPoint(0, 0), wxSize(width, height), 0);
219 canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
220
221 // Give it scrollbars
222 canvas->SetScrollbars(20, 20, 50, 50);
223
224 return canvas;
225 }
226
227 MyFrame *GetMainFrame(void)
228 {
229 return frame;
230 }
231